How much it will cost for the trip of Shanghai, Chengdu, Beijing, Harbin Dandong?

Hi, I am travelling to China in mid-January for 13 days, Shanghai (1) Chengdu (2) Beijing (5) inc. day trip to Harbin Dandong (2) Shanghai (3). Flights, accomodation etc are fully paid. I am wondering how much spending money would be appropriate for this trip... not going to do loads of shopping, mainly tourist type activities.